Cisco ASR 1000 Series Configuration Guide

Prerequisites for WCCP
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To use WCCP, IP must be configured on the interface connected to the Internet and another interface
must be connected to the content engine.
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The interface connected to the content engine must be a Fast Ethernet or Gigabit Ethernet interface.
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Only Catalyst 6500 series switches with a PFC4 support the following hardware capabilities:
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WCCP generic routing encapsulation (GRE) decapsulation in hardware
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WCCP Egress Mask assignment in hardware
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WCCP Exclude capability in hardware
Restrictions for WCCP
General
The following limitations apply to WCCPv1 and WCCPv2:
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WCCP works only with IPv4 networks.
•
WCCP bypasses Network Address Translation (NAT) when Cisco Express Forwarding is enabled.
WCCPv1
The following limitations apply to WCCPv1:
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WCCPv1 supports the redirection of HTTP (TCP port 80) traffic only.
•
WCCPv1 does not allow multiple routers to be attached to a cluster of content engines.
WCCPv2
The following limitations apply to WCCPv2:
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WCCP works only with IPv4 networks.
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For routers servicing a multicast cluster, the Time To Live (TTL) value must be set at 15 or fewer.
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Service groups can comprise up to 32 content engines and 32 routers.
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All content engines in a cluster must be configured to communicate with all routers servicing the cluster.
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Multicast addresses must be from 224.0.0.0 to 239.255.255.255.
WCCP VRF Support
In Cisco IOS Release 12.2(33)SRE, this feature is supported only on Cisco 7200 NPE-G2 and Cisco
7304-NPE-G100 routers.
This feature is supported in Cisco IOS Release 12.2(50)SY on Catalyst 6000 series switches with a PFC4.
IP Application Services Configuration Guide, Cisco IOS XE Release 3S (Cisco ASR 1000)
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Configuring WCCP
Prerequisites for WCCP

Cisco ASR 1000 Series Specifications

General

Brand	Cisco
Model	ASR 1000 Series
Category	Network Router
Language	English